| 1 | AEY | Aerolyon | IATA: 4Q, Callsign: Aerolyon, Name changed to L-Air | F | AVCODES |
| 2 | AEY | Aerolyon | IATA: DD, IATA designator changed to 4Q | F | AVCODES |
| 3 | AEY | L-Air Holdings | IATA: 4Q, Callsign: Aerolyon, Designator 4Q recalled by IATA. Name changed from Aerolyon | F | AVCODES |
| 4 | AEY | L-Air Holdings | Callsign: Aerolyon, Airline Liquidqted by courts 26 December 2002. Designator 4Q recalled by IATA. Name changed from Aerolyon | F | AVCODES |
| 5 | AEY | Air Italy S.p.A. | IATA: I9, Callsign: Air Italy, ICAO Designator changed from AJR. Designator I9* recalled by IATA. Designator NN recalled by IATA | I | AVCODES |
| 6 | AEY | Air Italy S.p.A. | IATA: I9, Callsign: Air Italy, IATA Prefix: 067, Ceased operation on 11 February 2020. Name changed to Air Italy Fleet Management, S.p.A. w.e.f. 01 March 2018. AOC returned on 01 March 2018. ICAO Designator changed from AJR. Designator I9* reinstated by IATA. Designator NN recalled by IATA | I | AVCODES |
| 7 | AEY | Air Italy S.p.A. | IATA: I9, Callsign: Air Italy, Merged into Meridiana fly on 18 July 2011. IATA Accounting code and Prefix code recalled. ICAO Designator changed from AJR. Designator I9* reinstated by IATA. Designator NN recalled by IATA | I | AVCODES |
| 8 | AEY | Aeroservicios Centroamericanos S. de R.L. | Callsign: Zeus, | PA | AVCODES |
| 9 | AEY | Air Italy | IATA: I9 | | ICAO1 |
| 10 | AEYC | AGRICULTURE & ENERGY CARRIERS LTD | | | SCAC4 |
| 11 | AEYI | AKAL ENERGY INC | | | SCAC4 |
| 12 | AEYN | AEROUNION | | | SCAC4 |
